package com.atguigu.order;

import com.alibaba.cloud.nacos.NacosConfigManager;
import com.alibaba.nacos.api.config.ConfigService;
import com.alibaba.nacos.api.config.listener.Listener;
import org.springframework.boot.ApplicationArguments;
import org.springframework.boot.ApplicationRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.openfeign.EnableFeignClients;
import org.springframework.context.annotation.Bean;

import java.util.concurrent.Executor;
import java.util.concurrent.Executors;

@EnableFeignClients//开启Feign远程调用功能
@EnableDiscoveryClient//开启服务发现功能
@SpringBootApplication
public class OrderMainApplication {
    public static void main(String[] args) {
        SpringApplication.run(OrderMainApplication.class, args);
        }
        //1、项目启动就监听配置文件变化
	    //2、发生变化后拿到变化值
	    //3、发送邮件
        @Bean
        ApplicationRunner applicationRunner(NacosConfigManager nacosConfigManager){
            return (ApplicationArguments args )-> {
                ConfigService configService = nacosConfigManager.getConfigService();
                configService.addListener("service-order.properties", "DEFAULT_GROUP", new Listener() {
                    @Override
                    public void receiveConfigInfo(String configInfo) {
                        System.out.println("配置文件发生变化："+configInfo);
                        System.out.println("邮件通知");
                    }

                    @Override
                    public Executor getExecutor() {
                        return Executors.newFixedThreadPool(4);
                    }
                });
                System.out.println("启动成功");
            };
     }
}